Cisco Catalyst 4500 series Administration Manual page 296

In-Service Software Upgrade (ISSU) on a VSS
The rollback timer can be configured only in the ISSU Init state.
Note
This task explains how to configure the rollback timer:
Command or Action
Step 1
Switch> enable
Step 2
Switch# configure terminal
Step 3
Switch(config)# issu set rollback-timer value
Step 4
Switch(config)# exit
Step 5
Switch# show issu rollback-timer
This example shows how to set the rollback timer to 3600 seconds:
Switch> enable
Switch# configure terminal
Enter configuration commands, one per line.
Switch(config)# issu set rollback-timer 3600
% Rollback timer value set to [ 3600 ] seconds
Switch(config)# exit
Switch# show issu rollback-timer
The Rollback Timer cannot be set in loadversion or runversion state, as the following example illustrates:
Switch# show issu state detail
Switch# show issu rollback-timer
Switch# configure terminal
Enter configuration commands, one per line.
Switch(config)# issu set rollback-timer 20
% ISSU state should be [ init ] to set the rollback timer
Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)SG
5-80
Rollback Process State = Not in progress
Configured Rollback Time = 60:00
RP State = Active
ISSU State = Load Version
Operating Mode = Stateful Switchover
Current Image = bootflash:old_image
Pre-ISSU (Original) Image = bootflash:old_image
Post-ISSU (Targeted) Image = bootflash:new_image
RP State = Standby
ISSU State = Load Version
Operating Mode = Stateful Switchover
Current Image = bootflash:new_image
Pre-ISSU (Original) Image = bootflash:old_image
Post-ISSU (Targeted) Image = bootflash:new_image
Rollback Process State = Not in progress
Configured Rollback Time = 60:00
Chapter 5
Purpose
Enables privileged EXEC mode.
Enter your password if prompted.
Enters global configuration mode.
Configures the rollback timer value, which can range from
0 to 7200.
Returns the user to privileged EXEC mode.
Displays the current setting of the ISSU rollback timer.
End with CNTL/Z.
Slot = 1
Slot = 11
End with CNTL/Z.
Configuring Virtual Switching Systems
OL-30933-01